Pipelines carrying various utilities in chemical industries are identified by their colour codes. The color of pipeline carrying steam is

A. Black

B. Silver grey

C. Green

D. Yellow

Please do not use chat terms. Example: avoid using "grt" instead of "great".

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  1. The passage between the nozzle and the __________ is called 'sprue' in case of injection moulding.
  2. The emf of a Deniell cell Zn | Zn2+ || Cu2+ | Cu can be increased by
  3. Out of the following __________ iron has the best capability to bear sudden & excessive shocks.
  4. Pick out the correct statement about the condensation.
  5. A dense structure of grinding wheel is not used for the
  6. Which of the following is not used as a bearing material?
  7. Difference at any instant between the value of the controlled variable and the set point is called the
  8. The most detrimental impurity in high pressure boiler feed water is
  9. Resistance of an electrical conductor is proportional to its (where, l = length and A = cross-sectional…
  10. Neutrons are present in all atoms except that of
  11. Wohler test is a destructive test to find out the __________ strength of a prepared metal specimen.
  12. Routing in production, planning & control is concerned with the
  13. Uniform ramming of sand in green sand moulding process leads to
  14. In the acid Bessemer process, the hot metal should have the following composition.
  15. Midrex process of sponge iron production uses reformed natural gas as the reducing agent, which uses…
  16. Softening of hardened steel is done by its
  17. A metal having a Poisson's ratio = 0.3 is elastically deformed under uniaxial tension. If the longitudinal…
  18. The surface tension of a liquid, at critical temperature is
  19. The ratio of the shear stress to the principal stress on a principal plane is
  20. In a counter flow heat exchanger, hot fluid enters at 170°C & leaves at 150°C, while the cold…
  21. The material used for coating the welding electrode is termed as the
  22. __________ has the highest melting point out of the following.
  23. Air/fuel ratio on molar (volume) basis for combustion of methane with theoretical quantity of air with…
  24. Hardening of steel is not possible, unless it is heated __________ critical point.
  25. Alumina, silica, lime and iron oxide are the basic raw material for the manufacture of Portland cement.…
  26. Cascade control is
  27. Name the safety device used to protect the boiler, when the water level falls below a minimum level.
  28. Pick out the wrong statement.
  29. Powder metallurgy technique is used in the production of __________ tools.
  30. Which of the, following is not associated with the functioning of a petrol engine?